Core Memory

We’re in the midst of a new nuclear energy boom. Start-ups – both fusion and fission – abound, and the U.S. government has cleared the way to build again. Meanwhile, China is racing ahead with nuclear plans that dwarf those of the rest of the world combined.
As with any boom cycle, there is a lot of hype and a lot to understand if you want to get a handle on what’s real and what’s not. And so, we brought James Krellenstein onto the podcast. He’s the co-founder and CEO of Alva Energy and he’s sort of frightening in how much he knows about the nuclear industry. Like, really. You’ll see.
This episode runs long because we wanted to use it as a chance to go through the past few decades of history and really explain why the U.S. nuclear industry slowed and how the U.S. might fix the situation. We also wanted to explain how all these new technologies work and, of course, explore where China is heading.
Krellenstein is something of a contrarian and thinks many of the U.S. nuclear start-ups are misguided in their approach.
He’s also incredible to listen to. You will enjoy this one. I think it’s one of the best episodes we’ve ever done.
The Core Memory podcast is on all major platforms and on our YouTube channel over here. If you enjoy the show, please leave a review and tell your friends.
This podcast is sponsored by Brex, the intelligent finance platform built to help companies spend smarter and move faster.
We run on Brex and so should you. Learn more about Brex right here.
We’ve also brought on a new sponsor. Welcome, SendCutSend!! They are an American manufacturing powerhouse and will help you make your metal parts with speed and skill. Core Memory subscribers can get a 15 percent discount on their next parts right here.


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It is time to talk about robotic body parts.
Connor Glass, this week’s guest, has a company called Phantom Neuro, and it makes a human machine interface. By this, we mean a computing device that gets implanted in your body and lets you control a robotic limb with your mind.
The first people using this technology are amputees. If, for example, you’ve lost your arm, you can get outfitted with a robotic prosthetic coupled with Phantom’s implant and then make your prosthetic move by thinking about what you’d like to do with it.
Phantom’s technology competes in places with implants from the likes of Neuralink and Synchron. The big difference is that nothing needs to be implanted in the patient’s brain. Phantom’s implant goes near the site of the amputation and links the robotic prosthetic with motor neurons to convey signals back and forth from the brain. It’s a simpler, faster surgery.
Where this technology is heading in the future is another story. Glass can see a day when humans have elective amputations to become, well, cyborgs.
We get into this weird and possibly wonderful future on the episode, along with Glass’s backstory and much more detail on how Phantom’s implant works.
The Core Memory podcast is on all major platforms and on our YouTube channel over here. If you enjoy the show, please leave a review and tell your friends.
This podcast is sponsored by Brex, the intelligent finance platform built to help companies spend smarter and move faster.
We run on Brex and so should you. Learn more about Brex right here.


This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.corememory.com/subscribe

We’re trying something new. Ashlee and Kylie dishing on Tech Land and dishing hard. The Core Memory podcast you didn’t know you needed but now can’t live without.
We dove into our recent sit-down with Sam Altman and Greg Brockman: why Greg seems to have stepped back into a real leadership role at OpenAI, our biggest takeaways from the episode, and why the startup has become its own telenovela.
We had to unpack the state of American manufacturing. Ashlee makes the case that we’re screwed on actuators — the motors that move every humanoid robot — and walks through who’s actually trying to fix it. LA as the secret manufacturing capital, Texas as the emerging center of gravity, SendCutSend (our newest sponsor!) as the closest thing America has to China for fast parts, and the hardware cult in central Texas that you should probably watch our video about.
We get into SpaceX’s $10B partnership with Cursor that may or may not be a Hail Mary for xAI. Whether space data centers are real or window dressing. Why Apple under Tim Cook feels creatively bankrupt and who actually builds the next computer for the AI era. Also, Anthropic quietly becoming a trillion-dollar company while Google somehow escapes scrutiny.
Plus: organs grown in mouse wombs (yes, really — go read the KindBio piece), merch is finally live, and a very special listener contest. Leave the most creative review on Apple, Spotify, or YouTube and we’ll send you two tickets to The Shins/Weezer tour. Do it!!! Er, please!!!!
The Core Memory podcast is on all major platforms and on our YouTube channel over here. If you enjoy the show, please leave a review and tell your friends.
This podcast is sponsored by Brex, the intelligent finance platform built to help companies spend smarter and move faster.
We run on Brex and so should you. Learn more about Brex right here.


This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.corememory.com/subscribe

Sam Altman and Greg Brockman came on Core Memory together for a ten-year look back at OpenAI. It’s also the first time they’ve done a media podcast together.
We juiced every second of our 90 minutes with the cofounders of OpenAI. We got into the company restructuring. Why Sora got cut. Why the social network is dead. The “personal AGI” that knows your calendar and your taste and books the concert ticket without asking. Sam said he’s worried Elon Musk will drop the lawsuit before it gets to court. Read that however you want.
There’s new OpenAI tech on the horizon too — a model that “makes ridiculously great images,” another that’s allegedly better at writing.
Ashlee pressed them on American manufacturing and whether we’re cooked. Sam says OpenAI will go so far as producing their own actuators for robots. We discussed the possibility of a real permanent underclass, the two futures Sam sees, and the third one Greg wants instead. Safety. Anthropic. The Mythos thing. Sam also talked, briefly, about the days after the attacks on his home.
The Core Memory podcast is on all major platforms and on our YouTube channel over here. If you enjoy the show, please leave a review and tell your friends.
This podcast is sponsored by Brex, the intelligent finance platform built to help companies spend smarter and move faster.
We run on Brex and so should you. Learn more about Brex right here.
The podcast is also made possible by E1 Ventures, which backs the most ambitious founders and start-ups.

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This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.corememory.com/subscribe

Guinness. Sharks. American manufacturing. These are a few of the interests I share with the founders of Ulysses, a San Francisco startup building autonomous underwater drones.
The idea for Ulysses started when one of the four co-founders was on a surf trip and learned how much of humanity depends on a single marine plant: the humble seagrass. He spent a weekend designing a robot to plant it. Two years later, the group of Irishmen — and for diversity, a Scot — have moved well beyond ecological restoration. They’re providing services for the Great Barrier Reef Foundation and selling their drones to the U.S. Navy.
The robots are called Mako. They’re two meters long, weigh about 400 pounds, and can dive 5,000 feet for up to 72 hours at a time. They’re also modular — payloads swap in and out like Legos, so the same vehicle that plants seagrass in Australia one week can inspect a submarine cable in the Baltic the next. A base Mako costs $50,000. Most legacy underwater drones built by big defense contractors can run between $1 million and $20 million each.
On this episode of the Core Memory podcast, we’re joined by Will O’Brien and Akhil Voorakkara, co-founders of Ulysses. They build these drones out of an office in San Francisco — for conservation, for academia, for national defense. They just raised a $38 million Series A led by Andreessen Horowitz through its American Dynamism fund. We discuss what it actually takes to make robots for the most hostile environment on Earth, why the ocean is about to have its SpaceX moment, and the surprisingly thin line between planting seagrass and defending NATO.
The Core Memory podcast is on all major platforms and on our YouTube channel over here. If you enjoy the show, please leave a review and tell your friends.
This podcast is sponsored by Brex, the intelligent finance platform built to help companies spend smarter and move faster.
We run on Brex and so should you. Learn more about Brex right here.


This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.corememory.com/subscribe